CN102689392A - Method for producing extruded polystyrene foam products by carbon dioxide foaming agent - Google Patents
Method for producing extruded polystyrene foam products by carbon dioxide foaming agent Download PDFInfo
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- CN102689392A CN102689392A CN2012101698308A CN201210169830A CN102689392A CN 102689392 A CN102689392 A CN 102689392A CN 2012101698308 A CN2012101698308 A CN 2012101698308A CN 201210169830 A CN201210169830 A CN 201210169830A CN 102689392 A CN102689392 A CN 102689392A
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- carbon dioxide
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- foaming agent
- high pressure
- extruder
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Abstract
The invention relates to a method for producing extruded polystyrene foam products by a carbon dioxide foaming agent. The method comprises mixing polystyrene resin, talc powder, auxiliaries and pigment to form mixture, adding the mixture into a primary extruder to be heated and plastified and injecting the carbon dioxide foaming agent into the primary extruder through an injection device; injecting the foaming auxiliaries into the primary extruder; feeding the mixture into a secondary extruder via a filter screen after the mixture is sufficiently plastified and melted; and cooling and forming after the mixture is foamed by a mold, and rolling up the mixture via traction or cutting off the mixture to form the finished products. The method has the advantages that the density of extruded polystyrene sheets and plates which are produced by the carbon dioxide foaming agent is low, toughness is good, flame retardance is high, stretching strength is high, and physical performances and chemical performances are stable relatively.
Description
Technical field
The present invention relates to a kind of production method of plastic foamed goods, relate in particular to a kind of method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods.
Background technology
Conventional plastic extruded product blowing agent is generally freon and alkanes blowing agent, and freon is now for forbidding product, and pollution is more serious, and the alkanes blowing agent uses abnormally dangerous.Carbon dioxide is good substitute as blowing agent at present, but generally all gaseous state existence of carbon dioxide are not easy injection, also have the problems such as being difficult for mixing of injecting.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods that a kind of frothing percentage is high, crushing resistance is good, draftability is good, intensity is high is provided.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods; It is characterized in that; Step is following: a kind of method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods; It is characterized in that step is following:
(1) 100 parts of polystyrene resins, talcum powder 0.5-3 part, auxiliary agent is an amount of, pigment is mixed and made into compound in right amount; Compound is added the one-level extruder carry out heating plasticizing; The pressure of extruder is controlled at 10-40MPa, and temperature is controlled at the 120-220 deg.c;
(2) carbon dioxide foaming agent is injected the one-level extruder in the ratio of the 1-15% of above-mentioned compound through injection device;
(3) blowing promotor is injected into the one-level extruder in the ratio of the 1-10% of above-mentioned compound through the auxiliary agent pump;
(4) above-mentioned compound, carbon dioxide foaming agent blowing promotor in the one-level extruder fully after the plasticizing fusion through screen pack in the secondary extruder, the pressure of extruder is controlled at 8-35Mpa;
(5) temperature with step (4) drops to the 180-80 deg.c, afterwards through mould foaming cooling forming, forms finished product through drawing to rolling or cutting off.
After forming finished product, can pack, the extruded plastic foam goods can be the polystyrene extruded plastic sheet material, also can be the polystyrene extruded sheet material, and wherein sheet material can be produced products such as bubble wrap pallet and mess-tin, and sheet material can be used for multiple heat preserving and insulating material.
Further; Described injection device is the special-purpose injection device of carbon dioxide foaming agent; Comprise carboloy dioxide storage plant, high pressure pumping installations; Carboloy dioxide storage plant and high pressure pumping installations are through pipeline connection, and the high pressure pumping installations is connected with the plastic extruder gas injection port through output pipe D, it is characterized in that; Be provided with carbon dioxide gas-liquid conversion equipment in the pipeline connection of described carboloy dioxide storage plant and high pressure pumping installations, carbon dioxide gas-liquid conversion equipment comprises compressor, insulating box and circulating pump; The output of described carboloy dioxide storage plant inserts insulating box through intake line A, inserts the high pressure pumping installations from insulating box through output pipe A afterwards, and intake line A and output pipe A connect pipeline; Described compressor links to each other with insulating box with output pipe B through intake line B, is marked with cooling fluid in the insulating box; Described circulating pump links to each other with the high pressure pumping installations with insulating box respectively through circulation line C; Described high pressure pumping installations is provided with pressure-display device and flow regulator.
Further, the pressure of described carboloy dioxide storage plant is 2-9Mpa, and the pressure of described high pressure pumping installations when carbon dioxide foaming agent injects is at 10-40Mpa, and flow is 1-15%.
Further, described intake line A and output pipe A connect pipeline, and intake line B and output pipe B connect pipeline, and described intake line B and output pipe B are metal tube.
Further, said high pressure pumping installations also is connected with the auxiliary agent storage device through pipeline.
Further, described output pipe D also is connected with the auxiliary agent pumping installations through pipeline, and the auxiliary agent pumping installations is connected with the auxiliary agent storage device.
The invention has the beneficial effects as follows: carbon dioxide foaming agent production polystyrene extruded plastic sheet material and panel density are low, good toughness, and anti-flammability is high, and hot strength is big, and physical property and chemical property are relatively stable.Use carbon dioxide as the non-volatile harmful substance of blowing agent, the raw material environmental protection does not produce industrial pollution, heat-proof insulation waterproof, protection against the tide, and utmost point low water absorbable, thermal conductivity coefficient are low, and resistance to compression is high, anti-aging.
Use the special-purpose injection device of carbon dioxide foaming agent, can let stable and accurate quantitatively being injected in the extruder of carbon dioxide foaming agent and auxiliary agent fully mix fusion with polystyrene melt, the product operation of producing is simple, product quality is high.
Detect according to test, the experimental data that a kind of carbon dioxide foaming agent of the present invention is produced the polystyrene extruded plastic foam goods is:
| Test item | Effect or data |
| Dimensional stability | ≤1.5％ |
| Expansion ratio | 1-40 doubly |
| Density | 20-35kg/m 3 |
| Foam structure | Closed pore |
| The aperture | Very little |
| Resistance to water | Good |
| Weatherability | Good |
Description of drawings
Fig. 1 is the structural representation of the special-purpose injection device of carbon dioxide foaming agent in the embodiment of the invention 1;
Fig. 2 is the structural representation of the special-purpose injection device of carbon dioxide foaming agent in the embodiment of the invention 2;
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
A kind of method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods, step is following:
(1) 100 parts of polystyrene resins, talcum powder 0.5-3 part, auxiliary agent is an amount of, pigment is mixed and made into compound in right amount; Compound is added the one-level extruder carry out heating plasticizing; The pressure of extruder is controlled at 10-40MPa, and temperature is controlled at the 120-220 deg.c;
(2) carbon dioxide foaming agent is injected the one-level extruder in the ratio of the 1-15% of above-mentioned compound through injection device;
(3) blowing promotor is injected into the one-level extruder in the ratio of the 1-10% of above-mentioned compound through the auxiliary agent pump;
(4) above-mentioned compound, carbon dioxide foaming agent blowing promotor in the one-level extruder fully after the plasticizing fusion through screen pack in the secondary extruder, the pressure of extruder is controlled at 8-35Mpa;
(5) temperature with step (4) drops to the 180-80 deg.c, afterwards through mould foaming cooling forming, forms finished product through drawing to rolling or cutting off.
Embodiment 1: as shown in Figure 1; Injection device is the special-purpose injection device of carbon dioxide foaming agent; Described injection device is the special-purpose injection device of carbon dioxide foaming agent; Comprise carboloy dioxide storage plant 4, high pressure pumping installations 10, carboloy dioxide storage plant 4 passes through pipeline connection with high pressure pumping installations 10, and high pressure pumping installations 10 is connected with plastic extruder 11 gas injection ports through output pipe D12; Be provided with carbon dioxide gas-liquid conversion equipment in the pipeline connection of carboloy dioxide storage plant 4 and high pressure pumping installations 10, carbon dioxide gas-liquid conversion equipment comprises compressor 1, insulating box 5 and circulating pump 7; The output of carboloy dioxide storage plant 4 inserts insulating box 5 through intake line A3, inserts high pressure pumping installations 10 from insulating box 5 through output pipe A6 afterwards; Described compressor 1 links to each other with insulating box 5 with output pipe B16 through intake line B2, is marked with cooling fluid in the insulating box 5; Circulating pump 7 links to each other with high pressure pumping installations 10 with insulating box 5 respectively through circulation line C15, and high pressure pumping installations 10 is provided with pressure-display device 8 and flow regulator 9.Intake line A3 and output pipe A6 connect pipeline, and intake line B2 and output pipe B16 connect pipeline, and intake line B2 and output pipe B16 are metal tube, and high pressure pumping installations 10 also is connected with auxiliary agent storage device 13 through pipeline.
The pressure of carboloy dioxide storage plant 4 is 2-9Mpa, and the pressure of high pressure pumping installations 10 when carbon dioxide foaming agent injects is at 10-40Mpa, and flow is 1-15%.
Carbon dioxide foaming agent gets into high pressure pumping installations 10 through carbon dioxide gas-liquid conversion equipment liquefy through pipeline; Blowing promotor adds through auxiliary agent storage device 13; Get into high pressure pumping installations 10 through pipeline; Inject output pipe D12 through the high pressure pumping installations more afterwards, carbon dioxide foaming agent and auxiliary agent mix in pipeline D12, again in extruder.
Embodiment 2: as shown in Figure 2 basic identical with embodiment 1; Its difference is that the special-purpose injection device structure of carbon dioxide foaming agent is different with the mode that blowing promotor injects; The structure difference is that output pipe D12 is connected with auxiliary agent pumping installations 14 through pipeline, and auxiliary agent pumping installations 14 is connected with auxiliary agent storage device 13.Carbon dioxide foaming agent gets into high pressure pumping installations 10 through carbon dioxide gas-liquid conversion equipment liquefy through pipeline; Be injected into afterwards among the output pipe D12; Other auxiliary agents are getting into auxiliary agent pumping installations 14 through auxiliary agent storage device 13 earlier; Be injected into output pipe D12 afterwards, carbon dioxide foaming agent and other auxiliary agents mix in output pipe D12 and get in the extruder more like this.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. method that adopts carbon dioxide foaming agent to produce the polystyrene extruded plastic foam goods is characterized in that step is following:
(1) 100 parts of polystyrene resins, talcum powder 0.5-3 part, auxiliary agent is an amount of, pigment is mixed and made into compound in right amount; Compound is added the one-level extruder carry out heating plasticizing; The pressure of extruder is controlled at 10-40MPa, and temperature is controlled at the 120-220 deg.c;
(2) carbon dioxide foaming agent is passed through injection device in the ratio of the 1-15% of above-mentioned compound and add the one-level extruder;
(3) blowing promotor is injected into the one-level extruder in the ratio of the 1-10% of above-mentioned compound through the auxiliary agent pump;
(4) above-mentioned compound, carbon dioxide foaming agent blowing promotor in the one-level extruder fully after the plasticizing fusion through screen pack in the secondary extruder, the pressure of extruder is controlled at 8-35Mpa;
(5) temperature with step (4) drops to the 180-80 deg.c, afterwards through mould foaming cooling forming, forms finished product through drawing to rolling or cutting off.
2. employing carbon dioxide foaming agent according to claim 1 is produced the method for polystyrene extruded plastic foam goods; It is characterized in that; Described injection device is the special-purpose injection device of carbon dioxide foaming agent; Comprise carboloy dioxide storage plant (4), high pressure pumping installations (10); Carboloy dioxide storage plant (4) passes through pipeline connection with high pressure pumping installations (10), and high pressure pumping installations (10) is connected with plastic extruder (11) gas injection port through output pipe D (12), it is characterized in that; Be provided with carbon dioxide gas-liquid conversion equipment in the pipeline connection of described carboloy dioxide storage plant (4) and high pressure pumping installations (10), carbon dioxide gas-liquid conversion equipment comprises compressor (1), insulating box (5) and circulating pump (7); The output of described carboloy dioxide storage plant (4) inserts insulating box (5) through intake line A (3), inserts high pressure pumping installations (10) from insulating box (5) through output pipe A (6) afterwards; Described compressor (1) links to each other with insulating box (5) with output pipe B (16) through intake line B (2), and insulating box is marked with cooling fluid in (5); Described circulating pump (7) links to each other with high pressure pumping installations (10) with insulating box (5) respectively through circulation line C (15), and high pressure pumping installations (10) is provided with pressure-display device (8) and flow regulator (9).
3. employing carbon dioxide foaming agent according to claim 2 is produced the method for polystyrene extruded plastic foam goods; It is characterized in that; The pressure of described carboloy dioxide storage plant (4) is 2-9Mpa; The pressure of described high pressure pumping installations (10) when carbon dioxide foaming agent injects is at 10-40Mpa, and flow is 1%-15%.
4. the method for producing the polystyrene extruded plastic foam goods according to claim 2 or 3 described employing carbon dioxide foaming agents; It is characterized in that; Described intake line A (3) and output pipe A (6) connect pipeline; Intake line B (2) and output pipe B (16) connect pipeline, and described intake line B (2) and output pipe B (16) are metal tube.
5. according to the method for claim 2 or 3 described employing carbon dioxide foaming agents production polystyrene extruded plastic foam goods, it is characterized in that described high pressure pumping installations (10) also is connected with through pipeline and is connected with auxiliary agent storage device (13).
6. the method for producing the polystyrene extruded plastic foam goods according to claim 2 or 3 described employing carbon dioxide foaming agents; It is characterized in that; Described output pipe D (12) also is connected with auxiliary agent pumping installations (14) through pipeline, and auxiliary agent pumping installations (14) is connected with auxiliary agent storage device (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210169830.8A CN102689392B (en) | 2012-05-29 | 2012-05-29 | A kind of method adopting carbon dioxide foaming agent to produce polystyrene extruded plastic foam goods |
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| CN201210169830.8A CN102689392B (en) | 2012-05-29 | 2012-05-29 | A kind of method adopting carbon dioxide foaming agent to produce polystyrene extruded plastic foam goods |
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| CN102689392B CN102689392B (en) | 2015-07-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231458A (en) * | 2013-04-28 | 2013-08-07 | 宁夏鼎盛阳光保温材料有限公司 | Device for manufacturing modified carbon dioxide foaming agent |
| CN104260305A (en) * | 2014-08-07 | 2015-01-07 | 璧山县捷成塑胶有限责任公司 | Production technology of EPE continuous physical foaming plate |
| CN107584783A (en) * | 2017-10-18 | 2018-01-16 | 阮伟炽 | A kind of production equipment and its production method of physical blowing extruded product |
Citations (5)
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| US3444283A (en) * | 1965-11-08 | 1969-05-13 | Mobil Oil Corp | Method for direct injection extrusion of polystyrene foam |
| CN1106742A (en) * | 1993-08-02 | 1995-08-16 | 赫彻斯特股份公司 | Molded structure comprising a thermoplastic, process for its production and its use |
| US6949208B1 (en) * | 2000-03-14 | 2005-09-27 | Sekisui Chemical Co., Ltd. | Injection molding process and injection molding apparatus for thermoplastic resin molded articles |
| CN1785645A (en) * | 2004-12-09 | 2006-06-14 | 隆典实业股份有限公司 | Manufacturing method of 1:1 rubber mould internal foamed rubber base |
| CN101559640A (en) * | 2009-06-04 | 2009-10-21 | 南京法宁格节能科技有限公司 | Carbon dioxide foaming agent injection device for producing polystyrene extruded sheet and injection method thereof |
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2012
- 2012-05-29 CN CN201210169830.8A patent/CN102689392B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3444283A (en) * | 1965-11-08 | 1969-05-13 | Mobil Oil Corp | Method for direct injection extrusion of polystyrene foam |
| CN1106742A (en) * | 1993-08-02 | 1995-08-16 | 赫彻斯特股份公司 | Molded structure comprising a thermoplastic, process for its production and its use |
| US6949208B1 (en) * | 2000-03-14 | 2005-09-27 | Sekisui Chemical Co., Ltd. | Injection molding process and injection molding apparatus for thermoplastic resin molded articles |
| CN1785645A (en) * | 2004-12-09 | 2006-06-14 | 隆典实业股份有限公司 | Manufacturing method of 1:1 rubber mould internal foamed rubber base |
| CN101559640A (en) * | 2009-06-04 | 2009-10-21 | 南京法宁格节能科技有限公司 | Carbon dioxide foaming agent injection device for producing polystyrene extruded sheet and injection method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231458A (en) * | 2013-04-28 | 2013-08-07 | 宁夏鼎盛阳光保温材料有限公司 | Device for manufacturing modified carbon dioxide foaming agent |
| CN104260305A (en) * | 2014-08-07 | 2015-01-07 | 璧山县捷成塑胶有限责任公司 | Production technology of EPE continuous physical foaming plate |
| CN107584783A (en) * | 2017-10-18 | 2018-01-16 | 阮伟炽 | A kind of production equipment and its production method of physical blowing extruded product |
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| CN102689392B (en) | 2015-07-29 |
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